Weathering of the blockfields in hirao granodiorite and effects of tunneling construction on the natural environment

Tetsuro Esaki, Kaijun Jiang, A. M. Abdel-Rahman, Yasuhiro Mitani, Guoyun Zhou, Mitsuaki Eguchi

Research output: Contribution to journalArticlepeer-review

Abstract

Blockfields have been mentioned in the literature for about 100 years and throughout have been a source of contention in terms of their age and weathering origin. In this paper, the evidence is presented from investigation on blockfields in Nagano area, which lies in Northern of Kyushu Island in Japan. Weathering conditions and the geotechnical properties of fresh and weathered rocks have been evaluated; the spatial relation between blockfields and tunnel has been clarified. It is concluded that Nagano blockfields have been formed from weathering of Hirao granodiorite rocks. The effects of highway tunneling construction on blockfields are also discussed.

Original languageEnglish
Pages (from-to)29-39
Number of pages11
JournalMemoirs of the Faculty of Engineering, Kyushu University
Volume61
Issue number1
Publication statusPublished - Mar 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Energy(all)
  • Atmospheric Science
  • Earth and Planetary Sciences(all)
  • Management of Technology and Innovation

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